£663m: The richest Manchester derby ever
![£663m: The richest Manchester derby ever](http://static.goal.com/1677900/1677992_gallery.jpg)
![HD Raheem Sterling Manchester City Roma HD Raheem Sterling Manchester City Roma](http://static.goal.com/1677900/1677992_thumb.jpg)
As the two big-spending rivals clash at Old Trafford on Sunday, both clubs will be hoping for three points to help justify their huge outlays
As the two big-spending rivals clash at Old Trafford on Sunday, both clubs will be hoping for three points to help justify their huge outlays